Station Name: TUOLUMNE R BL EARLY INTAKE NR MATHER CA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 2,369 feet

Nearest Address:
Cherry Lake Rd
Groveland, CA 95321
Tuolumne County

GPS Coordinates: 37.8815908, -119.9701824

Nearby Water Temperatures

Winter Storm Warning issued February 18 at 11:40AM PST until February 19 at 10:00PM PST by NWS Sacramento CA

Effective: Wed February 18, 2026, 11:40 AM
Expires: Thu February 19, 2026, 4:15 PM

* WHAT...Heavy snow with additional snow accumulations up to 1 foot between 1000 and 3000 feet, 2 to 3 feet above 3000 feet, and up to 4 feet at peaks. Light snowfall accumulations up to 2 inches below 1000 feet in Shasta and Tehama Counties. Winds gusting as high 45 to 55 mph. * WHERE...Portions of Northern California, now including elevations below 1000 ft in Shasta and Tehama Counties * WHEN...Until 10 PM PST Thursday. * IMPACTS...Dangerous to near impossible travel conditions with chain controls and road closures. Additional power outages from downed trees and power lines. Low visibility due to a combination of gusty wind and heavy snow. * ADDITIONAL DETAILS...Snow levels remain around 1500 to 2500 feet through Thursday in the Sierra Foothills with potential to see snow levels as low as 1000 feet. Snow levels potentially down to 300 feet along the southern Cascades, Shasta County, and Tehama County in the morning hours.

Check the latest road conditions from Caltrans online at quickmap.dot.ca.gov or dial 5 1 1.

Wind Advisory issued February 19 at 3:24AM PST until February 19 at 10:00PM PST by NWS Sacramento CA

Effective: Thu February 19, 2026, 3:24 AM
Expires: Thu February 19, 2026, 10:00 PM

* WHAT...South winds 10 to 20 mph with gusts of 35 to 45 mph expected. * WHERE...Carquinez Strait and Delta and Northern San Joaquin Valley. * WHEN...Until 10 PM PST this evening. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...Strongest winds will follow ongoing precipitation during the morning hours. A few gusts up to 50 mph can't be ruled out.

Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution.

Cold Weather Advisory issued February 19 at 12:35PM PST until February 21 at 10:00AM PST by NWS Hanford CA

Effective: Thu February 19, 2026, 12:35 PM
Expires: Thu February 19, 2026, 9:00 PM

* WHAT...Low temperatures of zero to ten degrees above 6,000 feet of the Sierra Nevada. Low temperatures of 10 to 20 degrees in the Sierra Nevada below 6,000 feet into the adjacent foothills. * WHERE...Sierra Nevada and foothills. * WHEN...From 4 AM Friday to 10 AM PST Saturday. * IMPACTS...Dangerous frostbite possible on unprotected skin. Wind chills reaching well below zero degrees on Friday morning.

Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves.

Winter Storm Warning issued February 19 at 12:20PM PST until February 19 at 10:00PM PST by NWS Sacramento CA

Effective: Thu February 19, 2026, 12:20 PM
Expires: Thu February 19, 2026, 10:00 PM

* WHAT...Additional heavy snow accumulation amounts range from up to 6 inches above 2000 to 3000 feet, and up to 1 foot above 4000 feet. Southwest wind gusts of 40 to 50 mph expected. * WHERE...Motherlode, Northeast Foothills, West Slope Northern Sierra Nevada, and Western Plumas County/Lassen Park. * WHEN...Until 10 PM PST this evening. * IMPACTS...Dangerous to near impossible travel conditions with chain controls and road closures. Low visibility due to a combination of wind and heavy snow. * ADDITIONAL DETAILS...Snow levels remain around 1500-2500 feet today in the Sierra and southern Cascades today.

Check the latest road conditions from Caltrans online at quickmap.dot.ca.gov or dial 5 1 1.

Cold Weather Advisory issued February 19 at 12:16PM PST until February 20 at 9:00AM PST by NWS Sacramento CA

Effective: Thu February 19, 2026, 12:16 PM
Expires: Fri February 20, 2026, 9:00 AM

* WHAT...Sub-freezing temperatures in the single digits to teens in the mountains with 20s to around 30 degrees in the foothills. * WHERE...Burney Basin / Eastern Shasta County, Motherlode, Mountains Southwestern Shasta County to Western Colusa County, Northeast Foothills, Shasta Lake Area / Northern Shasta County, West Slope Northern Sierra Nevada, and Western Plumas County/Lassen Park. * WHEN...From midnight tonight to 9 AM PST Friday. * IMPACTS...Very cold temperatures can lead to frostbite and hypothermia with prolonged exposure. This will especially impact those without power from the storm.

Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. If using a generator, please exercise safety. Keep pets indoors as much as possible. Make sure outdoor animals have a warm, dry shelter, food, and unfrozen water.